667216045828 has 12 divisors (see below), whose sum is σ = 1182408183040. Its totient is φ = 329385136392.

The previous prime is 667216045789. The next prime is 667216045871. The reversal of 667216045828 is 828540612766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055721276 + ... + 1055721907.

Almost surely, 2^667216045828 is an apocalyptic number.

It is an amenable number.

667216045828 is a deficient number, since it is larger than the sum of its proper divisors (515192137212).

667216045828 is a wasteful number, since it uses less digits than its factorization.

667216045828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111443266 (or 2111443264 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 667216045828 in words is "six hundred sixty-seven billion, two hundred sixteen million, forty-five thousand, eight hundred twenty-eight".